"We literally have lost our sovereignty, lost our borders, lost our ability to regulate. The problem you’ve got in the US is illegal immigration. Our problem is legal immigration to half a billion people."

Mr Farage told US viewers to "imagine if a court in Mexico could overrule, and imagine if you had free movement of people with Mexico".

He said: "How would you feel? You wouldn’t like it. What we are doing in the UK, we are reasserting our democratic rights, and in terms of business and trade we’ll go on trading."